Instrument for analysis of electric motors based on slip-poles component

Patent · Mon Jan 01 04:00:00 EST 1996

OSTI ID:870706

Haynes, Howard D ^[1]; Ayers, Curtis W ^[2]; Casada, Donald A ^[1]

---

1. Knoxville, TN
2. Clinton, TN

A new instrument for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician.

• Research Organization: LOCKHEED MARTIN ENRGY SYST INC
• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5578937
• OSTI ID: 870706
• Country of Publication: United States
• Language: English

Related Subjects

/324/318/
analysis
audible
bar
based
basis
component
component provide
condition
current
current signal
derived
device
diagnose
easy-to-use
electric
electric motor
electric motors
engineer
field
frequency
health
indication
indications
instrument
location
magnitude
monitor
monitoring
motor
motor current
motor speed
motors
operating
package
presence
provided
provides
relatively
remote
remote location
requiring
result
rotor
running
signal
simple-to-understand
slip-poles
slip-poles component
sound
speed
straightforward
synthesized
technician
trained
untrained
worker